George smith



GEORGE SMITH, OF PHILADELPHIA PENNSYLVANIA.

DOOR AND WINDOW BOLT.

Specification of Letters Patent No.

To all whom it may concern Be it known that I, GEORGE SMITH, of thecity of Philadelphia, in the county of Philadelphia, State of Pennsylvania, black and White smith, have invented a new improved common door and Window shutter safety spring-bolt to insure greater safety and to prevent said bolt from beingdrawn when once shot home.

rlhe nature of my invention consists in at,- taching' to the plate on Which the bolt is stapled a guard or lock for a key which operates o n a spring similar to a. spring lock. The spring' is set on the under side of the bolt plate with a catch fixed to the spring. When the bolt isV shoved home the catch springs up into a corresponding notch cut in the bolt, so that it cannot be unbolted 1,435, dated December 18, 1839.

Without a. key to press the spring catchout of the notch in the bolt. The bolt in other respects has the usual plate and staples.

The above particulars will enable any one skilled in the art to make and use my invention.

`What I claim as my invention and desire to secure lby Letters Patent is- The employment of the spring catch opened by a key acting on its sloped face and attached to the back of the bolt plate in combination with the bolt as herein described.

GEORGE SMITH.

Witnesses JOSHUA SPERING, S. B. KINDsToN.

rrnn sTATEs PATENT OFFICE.. Y 1 f 

